{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "Despite the apparent stability , organometallic complexes of methylthiolate and phenylthiolate with the gold - adatom ( RS - Au - SR , with R - the hydrocarbon group ) undergo a stoichiometric exchange reaction , forming hybridized CH3S - Au - SPh complexes ."}
{"Chemical": ["organometallic", "methylthiolate", "phenylthiolate", "RS - Au - SR", "hydrocarbon", "CH3S - Au - SPh"]}